Koning "F" Reservoir Reservoir Report
Last Updated: December 13, 2025
Koning "F" Reservoir is a privately owned irrigation reservoir located in Polk, Oregon.
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Summary
Built in 1995, this Earth dam stands at a height of 23 feet and has a length of 600 feet, providing a storage capacity of 99 acre-feet and covering a surface area of 11.8 acres. The reservoir is situated on an unnamed tributary to Ash Swale and serves the primary purpose of irrigation for the surrounding area.
Managed by the Oregon Water Resources Department, Koning "F" Reservoir is regulated, permitted, inspected, and enforced by the state agency. Despite being classified as having a low hazard potential, the reservoir's condition is currently not rated. With a regular inspection frequency of 6 years, the dam's emergency action plan status and risk assessment measures are not specified in the available data. As a critical water resource in the region, Koning "F" Reservoir plays a vital role in supporting agricultural activities and water supply needs in the area.
Located in a remote area with no downstream settlement, Koning "F" Reservoir poses minimal risk to surrounding communities. The dam is not associated with any federal agencies and has not undergone any significant modifications since its completion. With its stable condition and consistent water storage capacity, this reservoir serves as a reliable source of irrigation water for the local agricultural community, contributing to sustainable water resource management in the region.
Year Completed |
1995 |
Dam Length |
600 |
Dam Height |
23 |
River Or Stream |
UNNAMED TRIB TO ASH SWALE |
Primary Dam Type |
Earth |
Surface Area |
11.8 |
Drainage Area |
0.29 |
Nid Storage |
99 |
Hazard Potential |
Low |
Nid Height |
23 |
Seasonal Comparison
Weather Forecast
Nearby Streamflow Levels
Willamette River At Salem
|
35800cfs |
South Yamhill River At Mcminnville
|
8310cfs |
Luckiamute River Near Suver
|
3790cfs |
Zollner Creek Near Mt Angel
|
320cfs |
Abiqua Creek At Silverton
|
74cfs |
Silver Creek At Silverton
|
52cfs |
Dam Data Reference
Condition Assessment
SatisfactoryNo existing or potential dam safety deficiencies are recognized. Acceptable performance is expected under all loading conditions (static, hydrologic, seismic) in accordance with the minimum applicable state or federal regulatory criteria or tolerable risk guidelines.
Fair
No existing dam safety deficiencies are recognized for normal operating conditions. Rare or extreme hydrologic and/or seismic events may result in a dam safety deficiency. Risk may be in the range to take further action. Note: Rare or extreme event is defined by the regulatory agency based on their minimum
Poor A dam safety deficiency is recognized for normal operating conditions which may realistically occur. Remedial action is necessary. POOR may also be used when uncertainties exist as to critical analysis parameters which identify a potential dam safety deficiency. Investigations and studies are necessary.
Unsatisfactory
A dam safety deficiency is recognized that requires immediate or emergency remedial action for problem resolution.
Not Rated
The dam has not been inspected, is not under state or federal jurisdiction, or has been inspected but, for whatever reason, has not been rated.
Not Available
Dams for which the condition assessment is restricted to approved government users.
Hazard Potential Classification
HighDams assigned the high hazard potential classification are those where failure or mis-operation will probably cause loss of human life.
Significant
Dams assigned the significant hazard potential classification are those dams where failure or mis-operation results in no probable loss of human life but can cause economic loss, environment damage, disruption of lifeline facilities, or impact other concerns. Significant hazard potential classification dams are often located in predominantly rural or agricultural areas but could be in areas with population and significant infrastructure.
Low
Dams assigned the low hazard potential classification are those where failure or mis-operation results in no probable loss of human life and low economic and/or environmental losses. Losses are principally limited to the owner's property.
Undetermined
Dams for which a downstream hazard potential has not been designated or is not provided.
Not Available
Dams for which the downstream hazard potential is restricted to approved government users.
Koning "F" Reservoir
Keizer Rapids